Gas stove provided with anti-dry-burning device

ABSTRACT

A gas stove equipped with an anti-dry-burning device comprises the anti-dry-burning device and a gas cooker with a flameout protection device. The anti-dry-burning device is arranged at the central position of a combustor of the gas stove and is fixed on the gas stove. The anti-dry-burning device at least comprises a temperature controller, a temperature controller insulating base, a spring, an anti-dry-burning probe body and an anti-dry-burning probe base. The temperature controller is a bimetal thermostat, and is serially connected between an inductive probe of the gas cooker flameout protection device and a gas solenoid valve. The inductive probe of the gas cooker flameout protection device at least comprises a thermocouple and an ion sensor needle.

RELATED APPLICATION

This application claims priority to Chinese Patent Application Serial No. 201610561088.3, entitled “Gas Stove Provided With Anti-Dry-Burning Device,” filed on Jul. 11, 2016, which is incorporated herein by reference in its entirety.

FIELD OF THE INVENTION

The present invention relates to gas stoves, and in particular, to a gas stove provided with an anti-dry-burning device.

BACKGROUND OF THE INVENTION

In the technical field of an anti-dry-burning device of a gas stove, no matter which type of sensor (e.g., a temperature sensor or a pressure sensor) is adopted, a corresponding control system needs to be additionally arranged.

For example, Chinese Patent No. CN200710145762.0, entitled “anti-dry-burning electric linkage valve for gas stove,” provides an anti-dry-burning circuit control switch under the rotation control of a press knob in order to achieve anti-dry-burning electric linkage. Chinese Patent No. CN201610212613.0, entitled “safety protection device for preventing dry burning and flameout of household gas stove,” also provides a circuit board that closes a solenoid valve to cut off the gas circuit in the case of accident flameout, which causes heat generated potential to disappear, or in the case of temperature exceeding a limit caused by dry burning of a pot bottom. Chinese utility model Patent No. CN201120291047.X, entitled “anti-dry-burning control device for gas stove,” discloses an anti-dry-burning control device for a gas stove, which comprises multiple groups of thermocouples, a differential amplifier circuit, a microprocessor control unit and a main intake pipeline connected to the gas stove, wherein a main solenoid valve and a main solenoid valve control circuit arranged on the main intake pipeline; the thermocouples are used for detecting the temperature of the pot bottom and transmitting a signal to the differential amplifier circuit; the differential amplifier circuit is used for differentially amplifying the temperature signal and transmitting the signal to the microprocessor control unit; and the microprocessor control unit controls the opening and closing of the main solenoid valve.

With the addition of a corresponding control system to the anti-dry-burning device for the gas stove, not only the cost, but also the failure points are increased accordingly. Therefore, it is desirable to design a low-cost anti-dry-burning device for the gas stove without adding a control system.

SUMMARY OF THE INVENTION

In view of the above problems, an objective of the present invention is that by mounting an anti-dry-burning device of the present invention, a gas stove achieves an anti-dry-burning function at a low cost and work reliably without any additional anti-dry-burning control system.

The technical solutions of the present invention are achieved as follows.

A gas stove provided with an anti-dry-burning device comprises the anti-dry-burning device and a gas cooker with a flameout protection device. The anti-dry-burning device is arranged at the central position of a combustor of the gas stove and is fixed on the gas stove. Specifically, the anti-dry-burning device at least comprises a temperature controller, a temperature controller insulating base, a spring, an anti-dry-burning probe body and an anti-dry-burning probe base. The temperature controller is a bimetal thermostat. The temperature controller is serially connected between an inductive probe of the gas cooker flameout protection device and a gas solenoid valve. The inductive probe of the gas cooker flameout protection device at least comprises a thermocouple and an ion sensor needle.

More specifically, the temperature controller insulating base is columnar, and at least includes a temperature sensor mounting groove at the top, a spring positioning boss or a positioning groove at the bottom, and a temperature controller lead outlet hole at the central position. A hollow cavity for receiving the temperature controller and the temperature controller insulating base is arranged at the upper part of the anti-dry-burning probe body, and a spring receiving cavity is arranged at the lower part of the anti-dry-burning probe body. The anti-dry-burning probe body comprises a top cover, an upper probe shell and a lower probe shell. A spring receiving cavity is arranged at the upper part of the anti-dry-burning probe base, and a temperature controller lead protective tube is arranged at the lower part of the anti-dry-burning probe base. A limiting mechanism is arranged between the anti-dry-burning probe body and the anti-dry-burning probe base. The temperature controller and the temperature controller insulating base are enclosed in the anti-dry-burning probe body by a welding structure or a riveting structure.

Furthermore, for the anti-dry-burning probe body, when the top cover and the upper probe shell are integrated into one piece, the lower probe shell is an independent structure. When the upper probe shell and the lower probe shell are integrated into one piece, the top cover is an independent structure. The limiting mechanism at least includes a limiting flange or a limiting boss arranged at the bottom of the lower probe shell, and a limiting flange or a limiting boss arranged at the top of the anti-dry-burning probe base.

The basic principles of the present invention are as follows.

The anti-dry-burning device with a bimetal thermostat as a temperature controller is mounted on the gas cooker with the flameout protection device, and the temperature controller is serially connected between the probe of the gas cooker flameout protection device and the gas solenoid valve. Once the temperature exceeds a predetermined temperature in use, the bimetal thermostat is disconnected to cut off the power supply to the solenoid valve, causing the gas channel to be closed and the gas stove to be turned off, thus preventing the dry burning of the gas stove.

The present invention has the following beneficial effects:

1. The anti-dry-burning device of the present invention uses bimetal thermostat as the temperature controller. Therefore, it is simple in structure, low in cost and reliable in work. The gas stove equipped with the flameout protection device can achieve an anti-dry-burning function without any additional control system.

2. The anti-dry-burning device of the present invention can be used in a wide range of applications. For example, it can be applied not only to gas stoves equipped with thermocouple flameout protection devices, but also to gas stoves equipped with ion probe flameout protection devices.

3. With respect to the gas stove equipped with the anti-dry-burning device of the present invention, if no pot is placed on the stove after ignition for a long time, the probe of the anti-dry-burning device will automatically cut off the gas source to extinguish the fire when the temperature exceeds a predetermined value, so that the gas loss and the potential safety hazards resulting from burning without placing the pot for the long time can be reduced.

4. With respect to the gas stove equipped with the anti-dry-burning device in the present invention, the oil temperature can also be controlled not to exceed 350° C. during frying via the temperature setting of the temperature controller, so as to meet the demands of frying and prevent personal and property damages caused by over-high oil temperature and oil combustion.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 is a structural schematic diagram (full sectional view) of an anti-dry-burning device assembly according to a first embodiment of the present invention when a welding structure is adopted;

FIG. 2 is a structural schematic diagram (full sectional view) of a temperature controller insulating base in the anti-dry-burning device according to the first embodiment of the present invention;

FIG. 3 is a structural schematic diagram (full sectional view, a welding structure is adopted at the connection site of an upper probe shell and a lower probe shell) of an anti-dry-burning probe body in the anti-dry-burning device according to the first embodiment of the present invention;

FIG. 4 is a structural schematic diagram (full sectional view) of an anti-dry-burning probe base in the anti-dry-burning device according to the first embodiment of the present invention;

FIG. 5 is a structural schematic diagram (full sectional view) of the anti-dry-burning device assembly according to the first embodiment of the present invention when a riveting structure is adopted;

FIG. 6 is a structural schematic diagram (full sectional view) of an anti-dry-burning device assembly according to a second embodiment of the present invention when a riveting structure is adopted;

FIG. 7 is a structural schematic diagram (full sectional view, a welding structure is adopted at the connection site of a probe top cover and an upper probe shell) of an anti-dry-burning probe body in the anti-dry-burning device according to the second embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present invention is exemplified below in detail by referring to Embodiment 1 and Embodiment 2 and their accompanying drawings FIGS. 1-7.

Embodiment 1

One of the exemplary embodiments of the present invention is illustrated below in FIGS. 1-5.

A gas stove equipped with an anti-dry-burning device comprises an anti-dry-burning device and a gas cooker equipped with a flameout protection device. The anti-dry-burning device is arranged at the central position of a combustor of the gas stove and is fixed on the gas stove. The anti-dry-burning device comprises a temperature controller 1, a temperature controller insulating base 2, a spring 3, an anti-dry-burning probe body 4 and an anti-dry-burning probe base 5. The temperature controller is a bimetal thermostat. The temperature controller is serially connected between an inductive probe of the gas cooker flameout protection device and a gas solenoid valve. The inductive probe of the gas cooker flameout protection device may be a thermocouple, or an ion sensor needle, which is matched with the flameout protection device.

The temperature controller insulating base is columnar, and is equipped with a temperature sensor mounting groove 2.1 at the top, a spring positioning boss 2.2 at the bottom and a temperature controller lead outlet hole 2.3 at the central position. A hollow cavity 4.1 for receiving the temperature controller and the temperature controller insulating base is arranged at the upper part of the anti-dry-burning probe body, and a spring receiving cavity 4.2 is arranged at the lower part of the anti-dry-burning probe body. The anti-dry-burning probe body comprises a top cover 4.3, an upper probe shell 4.4 and a lower probe shell 4.5. The top cover and the upper probe shell are integrated into one piece. The lower probe shell is provided with a limiting flange 4.6 at its bottom. A spring mounting cavity 5.1 is arranged at the upper part of the anti-dry-burning probe base. A temperature controller lead protective tube 5.2 is arranged at the lower part of the anti-dry-burning probe base. A limiting flange 5.3 is arranged at the top of the anti-dry-burning probe base. A welding structure 4.7 is adopted at the connection site of the upper probe shell and the lower probe shell to enclose the temperature controller and the temperature controller insulating base in the anti-dry-burning probe body.

Depending on the specific structure of the gas stove, the anti-dry-burning device can be fixed at the bottom of the combustor of the gas stove, or on the bottom shell of the gas stove through the lead protective tube of temperature controller at the lower part of the anti-dry-burning device by a pipe clamp and a bracket.

As shown in FIG. 5, in the first embodiment, a riveting structure 4.7 a can also be adopted at the connection site of the upper probe shell and the lower probe shell.

Embodiment 2

As shown in FIG. 6, this embodiment differs from Embodiment 1 in that the top cover of the anti-dry-burning probe body is an independent structure, the upper probe shell and the lower probe shell are integrated into one piece, and a riveting structure 4.8 a is adopted at the connection site of the top cover and the upper probe shell to enclose the temperature controller and the temperature controller insulating base in the anti-dry-burning probe body.

As shown in FIG. 7, a welding structure 4.8 can also be adopted at the connection site of the top cover and the upper probe shell in this embodiment.

In the aforementioned embodiments, the spring mounting cavity at the upper part of the anti-dry-burning probe base and the temperature controller lead protective tube at the lower part of the anti-dry-burning probe base can have a welding structure therebetween and can also be an integrated structure; and the welding structure or the riveting structure on the anti-dry-burning probe body is formed after the anti-dry-burning device is assembled.

The aforementioned embodiments are intended to be exemplary rather than limiting, and all modifications and changes that fall within the spirit of the invention are intended to be covered by the appended claims. 

What is claimed is:
 1. A gas stove comprising: an anti-dry-burning device; and a gas cooker with a flameout protection device, wherein the anti-dry-burning device is arranged at a central position of a combustor of the gas stove and is fixed on the gas stove, the anti-dry-burning device at least comprising: a temperature controller, a temperature controller insulating base, a spring, an anti-dry-burning probe body, and an anti-dry-burning probe base, the temperature controller being a bimetal thermostat and serially connected between an inductive probe of the gas cooker flameout protection device and a gas solenoid valve, and the inductive probe of the gas cooker flameout protection device at least comprising a thermocouple and an ion sensor needle.
 2. The gas stove according to claim 1, wherein the temperature controller insulating base is columnar, and at least comprises a temperature sensor mounting groove at the top, a spring positioning boss or a positioning groove at the bottom, and a temperature controller lead outlet hole at the central position.
 3. The gas stove according to claim 1, wherein the anti-dry-burning probe body has a hollow cavity at the upper part of the body for receiving the temperature controller and the temperature controller insulating base, and a spring receiving cavity at the lower part of the body, the anti-dry-burning probe body comprising a top cover, an upper probe shell and a lower probe shell; the anti-dry-burning probe base having a spring receiving cavity at the upper part of the base, and a temperature controller lead protective tube at the lower part of the base; a limiting mechanism being arranged between the anti-dry-burning probe body and the anti-dry-burning probe base; and the temperature controller and the temperature controller insulating base being enclosed in the anti-dry-burning probe body by a welding structure or a riveting structure.
 4. The gas stove according to claim 3, wherein for the anti-dry-burning probe body, when the top cover and the upper probe shell are integrated into one piece, the lower probe shell is an independent structure; and when the upper probe shell and the lower probe shell are integrated into one piece, the top cover is an independent structure.
 5. The gas stove according to claim 3, wherein the limiting mechanism at least comprises a first limiting flange or a first limiting boss arranged at the bottom of the lower probe shell, and a second limiting flange or a second limiting boss arranged at the top of the anti-dry-burning probe base. 